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United States Patent | 5,676,607 |
Stumpf | October 14, 1997 |
A laser beam strike zone indicator including a home plate. A plurality of adjustable laser beams are directed upwardly from the home plate to define a strike zone for a height of a predetermined batter.
Inventors: | Stumpf; Ernest A. (1222 Paseo Gracia, San Dimas, CA 91773) |
Appl. No.: | 747250 |
Filed: | November 18, 1996 |
Current U.S. Class: | 473/455 |
Intern'l Class: | A63B 071/02 |
Field of Search: | 473/454,455,456 273/271 |
4545576 | Oct., 1985 | Harris | 273/25. |
4611993 | Sep., 1986 | Brown | 273/371. |
4941662 | Jul., 1990 | Deperna | 273/25. |
4972172 | Nov., 1990 | McLaughlin | 340/331. |
5069450 | Dec., 1991 | Pyle | 273/25. |
5071122 | Dec., 1991 | Messina | 273/26. |
5401016 | Mar., 1995 | Heglund et al. | 473/455. |